I'm going to be picking up a '52 cadillac, was told the wheel pattern is 5 on 5. So I go to two different yards looking for rollers so I can move the car. Everything I measure seems to be 5 on 4 3/4. The guy at one yard pulls out his cheat sheet wheel disc thingy sets it on the wheel and it lines up perfectly 5 on 5. But when I measure it, it reads 5 on 4 3/4. About then a buddy calls says he has a set of 5 on 4 3/4. I get there, the wheel is marked 5 on 4 3/4 but when I measure it, it reads 5 on 4 1/2. Am I missing something here? I thought center to center is the measurement. Seems like center to center minus a 1/4 is the actual measurement. Any advice?